In her 2003 commencement address at the University of New Hampshire, three-time Academy Award-winning actress Meryl Streep shared wisdom gleaned from her long career. She encouraged graduates to cultivate resilience and practice self-care, advising them to “guard [their] good mood” through simple daily rituals such as listening to music and reading, as well as carving out plenty of time to laugh and love. Her message reminds us that success and fulfillment depend as much on mental discipline and inner balance as on skill, opportunity, or luck. By quieting the inner voices that chip away at our confidence, we can focus on what sustains our energy and momentum throughout life.